Radiator



Dec. 17, 1929. magma 1,739,671

' nApIA'ron Filed March 23, 1926 llH Im I amounted,

Patented Dec. 17, 1929 UNITED STATES PATENT OFFICE HARRY A, HIGGINS, OF DETROIT, MICHIGAN, ASSIGNOR TO-LONG MANUFACTURING COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN RADIATOR- Application filed March 23, 1926. Serial No. 96,703.

This invention relates to radiators and more particularly to radiators of the horizontal water tube type in which a tortuous communication between the upper and lower headers is provided.

The invention has as its principal object to improve generally devices of this character by rendering the same more eflicient, sim ple to manufacture and economical to produce. These objects and various other objects, advantages, and novel details of construction of one illustrative embodiment of the invention will be described in detail in the accompanying specification, reference being had to the accompanying drawings wherein;

Figure 1 is a front elevation of a radiator constructed in accordance with this invention;

Figure 2 is an enlarged fragmentary sectional view taken substantially on the plane indicated by line 22 in Figure 1;

Figure 8 is a fragmentary sectional view taken substantially on the plane indicated by line 38 in Figure 2;

Figure 4 is a fragmentary detail perspective View.

Referring now particularly to the drawings wherein like reference characters indicate like parts, it will be noted that the radiator structure includes upper and lower head ers and 11 respectively intermediate which a plurality of horizontally arranged parallel water tubes or compartments are arranged. These sections establish communication be tween the upper and lower headers and provide tortuous passages through which the water travels or in a manner to be more fully hereinafter referred to.

Each of the water tubes or compartments 12 comprises a pair of spaced walls 13 peripherally united as at 14. Each section 12 may either be formed of a single sheet of metal bent longitudinally thereof with the free longitudinal edges united as shown at 15 in F igure 4, or each section may be composed of two separate sheets suitably peripherally united as is well known in this art. The edges of the walls 13 are united at the endsas indicated at 16 so that each section 12 constitutes a separate water compartment or chamber. In constructing a radiator, a plurality of the sections 12 are arranged in superposed relation with the sections extending horizontally and with their longitudinal edges ex posed at the front and rear of the radiator.

The sections 12 in the assembled radiator are spaced apart by outwardly projecting protuberances formed in the walls to provide air spaces therebetween which extend from the front to the rear of the radiator as will be readily apparent. The aforesaid protuberances consequently project into this air space and as the water to be cooled is flowing through these protuberances the radiating surface of the radiator is increased and its heat dissipating efiiciency enhanced.

For providing communication between adjacent sections of the radiator to thus provide for communication between the headers 10 and 11 the walls of each section are provided with the aforesaid outwardly directed protuberances indicated at 17. These protuberances may be of the shape or contour illustrated in the drawings wherein the circular pan-shape portion 18 of each protuberance terminates in a vertical projection or nipple portion 19 of relatively smaller diameter. The ends of each protuberance is perforated or provided with an opening 20. I

The protuberances 17 may as illustrated in the drawings, be arranged in-rows transversely of each section but it is preferable that the rows of protuberances formed in the opposed walls of each section be disaligned vertically. 7 However a uniformity of spacing of the rows of protuberances is maintained in each of the sections 12 so that when superposed in the manner illustrated the rows of protuberances formed in the lower wall of one section 12 will coincide with the rows of protuberances formed in the upper wall of the next lower section. Thus, the ends of adjacent protuberances are arranged in abut ting relation and a water tight union may be effected therebetween in any well known manner, such for instance as soldering the joints. By reason of the openings 20 in the protuberances the interior of adjacent sections 12 are made intercommunicating. However, it

of the rows of protuberances of each section 12 tortuous or angular passages are provlded through which the water traveling from the upper'to the lower header must take Obviously the protuberances formed in the upper wall of the uppermost section 12 and the protuberances formed in the lower wall of the lowermost section will communicate directly with the upper and lower headers 10 and 11 respectively; Therefore, in operation water flowing through the radiator will enter one of the sections 12 through the rows of protuberances formed for instance in the upper wall thereof whereupon it will spread out in a thin sheet between the upper and lower walls ofthis section in order to continue its downward flow through the next adjacent rows of protuberances which are out of vertical alignment with the rows of protuberances in the upper Wall. This zigzag or tortuous passage of the water will be maintained throughout its entire flow through the radiator and an intimate contact between the water and the walls of the radiator sections will be assured.

directed disaligned perforated protuberances formed on each section, each of the said protuberances including a relatively wide tubu-; lar base portion and a reduced tubular end. 7 portion, the free edge of the wall defining the reduced tubular end portion of each protuberance being adapted for abutting engagement with the free edge of the wall'defining the reduced tubular end portion of the cor responding p'rotuberanceofi the next adjacent section. I 1 a V 3 In testimony whereof I aflix my signature,

HARRY A. HIGGINS. 7

Consequently an efliciency of heat dissipation efficient radiation is obtained.

WVhile an embodiment of the invention ha been described and illustrated somewhat in detail various changes in these details may be resorted to without departingfrom the spirit and scope of the invention and to this end reservation is made to make such changes as may come with the purview of the accomof the radiator, and means for establishing.

communications between said sections, said Hmeans including a plurality of identically shaped protuberances formed on each section,

each of said protuberances including a relatively wide tubular base portion and a reduced. tubular end portion, the reduced tubular end portion of eachprotuberance being adapted for abutting engagement with the reduced tubular end portion of" the corresponding protuberance of the next'adjacent section.

2. Ina radiator, a plurality of sections each comprising a hollow member constituting a water chamber and extending horizontally of the radiator, and means for establishing communication between said sections, said means including a plurality of outwardly 

